<div style="text-align:center">
  <h1>
    Welcome to {{ title }}!
  </h1>
  <a [routerLink]="['/']">Home</a>
  <a [routerLink]="['/product']">Product Details</a>
  <a [routerLink]="['/product',title]">Product Param</a>
  <input type="button" value="product details" (click)="navigateToProd()">
  <router-outlet></router-outlet>
</div>
